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/*
* FreeRTOS V202111.00
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* http://www.FreeRTOS.org
* http://aws.amazon.com/freertos
*
* 1 tab == 4 spaces!
*/
/******************************************************************************
* This project provides two demo applications. A simple blinky style project,
* and a more comprehensive test and demo application. The
* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
* select between the two. The simply blinky demo is implemented and described
* in main_blinky.c. The more comprehensive test and demo application is
* implemented and described in main_full.c.
*
* This file implements the code that is not demo specific, including the
* hardware setup and standard FreeRTOS hook functions.
*
* When running on the PolarFire SoC hardware:
* When executing correctly the yellow LED will toggle every three seconds. If
* the yellow LED toggles every 500ms then one of the self-monitoring test tasks
* discovered a potential issue. If the red led toggles rapidly then a hardware
* exception occurred.
*
* ENSURE TO READ THE DOCUMENTATION PAGE FOR THIS PORT AND DEMO APPLICATION ON
* THE http://www.FreeRTOS.org WEB SITE FOR FULL INFORMATION ON USING THIS DEMO
* APPLICATION, AND ITS ASSOCIATE FreeRTOS ARCHITECTURE PORT!
*
*/
/* FreeRTOS kernel includes. */
#include <FreeRTOS.h>
#include <task.h>
/* PolarFire HAL includes. */
#include "mpfs_hal/mss_hal.h"
#include "drivers/mss/mss_gpio/mss_gpio.h"
#include "drivers/mss/mss_mmuart/mss_uart.h"
/* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
or 0 to run the more comprehensive test and demo application. */
#define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0
/*-----------------------------------------------------------*/
/*
* main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
* main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0.
*/
#if ( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 )
extern void main_blinky( void );
#else
extern void main_full( void );
#endif /* #if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 */
/*
* Prototypes for the standard FreeRTOS callback/hook functions implemented
* within this file. See https://www.freertos.org/a00016.html
*/
void vApplicationMallocFailedHook( void );
void vApplicationIdleHook( void );
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
void vApplicationTickHook( void );
/*
* Setup the hardware to run this demo.
*/
static void prvSetupHardware( void );
/*-----------------------------------------------------------*/
/* Main function for the HART0(E51 processor). Application code running on
* HART0 is placed here. */
void e51( void )
{
prvSetupHardware();
/* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
* of this file. */
#if( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 )
{
main_blinky();
}
#else
{
main_full();
}
#endif
}
/*-----------------------------------------------------------*/
static void prvSetupHardware( void )
{
/* Configure UART0. */
SYSREG->SUBBLK_CLOCK_CR |= SUBBLK_CLOCK_CR_MMUART0_MASK;
SYSREG->SOFT_RESET_CR &= ~SOFT_RESET_CR_MMUART0_MASK;
MSS_UART_init( &( g_mss_uart0_lo ),
MSS_UART_115200_BAUD,
MSS_UART_DATA_8_BITS | MSS_UART_NO_PARITY | MSS_UART_ONE_STOP_BIT );
/* Configure the LED. */
mss_config_clk_rst( MSS_PERIPH_GPIO2, ( uint8_t )MPFS_HAL_FIRST_HART, PERIPHERAL_ON );
MSS_GPIO_config( GPIO2_LO, MSS_GPIO_16, MSS_GPIO_OUTPUT_MODE ); /* Red Led (LED1). */
MSS_GPIO_config( GPIO2_LO, MSS_GPIO_18, MSS_GPIO_OUTPUT_MODE ); /* Yellow Led (LED3). */
}
/*-----------------------------------------------------------*/
void vApplicationMallocFailedHook( void )
{
/* vApplicationMallocFailedHook() will only be called if
* configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
* function that will get called if a call to pvPortMalloc() fails.
* pvPortMalloc() is called internally by the kernel whenever a task, queue,
* timer or semaphore is created. It is also called by various parts of the
* demo application. If heap_1.c or heap_2.c are used, then the size of the
* heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
* FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
* to query the size of free heap space that remains (although it does not
* provide information on how the remaining heap might be fragmented). */
taskDISABLE_INTERRUPTS();
for( ;; );
}
/*-----------------------------------------------------------*/
void vApplicationIdleHook( void )
{
/* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
* to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle
* task. It is essential that code added to this hook function never attempts
* to block in any way (for example, call xQueueReceive() with a block time
* specified, or call vTaskDelay()). If the application makes use of the
* vTaskDelete() API function (as this demo application does) then it is also
* important that vApplicationIdleHook() is permitted to return to its calling
* function, because it is the responsibility of the idle task to clean up
* memory allocated by the kernel to any task that has since been deleted. */
}
/*-----------------------------------------------------------*/
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
{
( void ) pcTaskName;
( void ) pxTask;
/* Run time stack overflow checking is performed if
* configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
* function is called if a stack overflow is detected. */
taskDISABLE_INTERRUPTS();
for( ;; );
}
/*-----------------------------------------------------------*/
void vApplicationTickHook( void )
{
/* The tests in the full demo expect some interaction with interrupts. */
#if( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY != 1 )
{
extern void vFullDemoTickHook( void );
vFullDemoTickHook();
}
#endif
}
/*-----------------------------------------------------------*/
void vToggleLED( void )
{
static volatile uint8_t value = 0u;
value = ( value == 0u ) ? 1u : 0u;
MSS_GPIO_set_output( GPIO2_LO, MSS_GPIO_18, value );
}
/*-----------------------------------------------------------*/
void vAssertCalled( void )
{
volatile uint32_t ul;
const uint32_t ulNullLoopDelay = 0x1ffffUL;
static volatile uint8_t value = 0u;
taskDISABLE_INTERRUPTS();
/* Flash the red LED to indicate that assert was hit - interrupts are off
* here to prevent any further tick interrupts or context switches, so the
* delay is implemented as a crude loop instead of a peripheral timer. */
for( ;; )
{
for( ul = 0; ul < ulNullLoopDelay; ul++ )
{
__asm volatile( "nop" );
}
value = ( value == 0u ) ? 1u : 0u;
MSS_GPIO_set_output( GPIO2_LO, MSS_GPIO_16, value );
}
}
/*-----------------------------------------------------------*/
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